DIY Network

All Projects

TV Projects

    What Do You Want To Work On?

      What Activity Do You Want To Do?

        0

        Available Projects

        Get Results

        DIY Network /

        Message Boards

            DIY Message Boards  Hop To Forum Categories  Home Improvement  Hop To Forums  Plumbing    PEX Cold Supply
        Go
        New
        Find
        Notify
        Tools
        Reply
          
        PEX Cold Supply Sign In/Join 
        posted
        I am converting my plumbing to PEX and I am planning on using a manifold where each fixture has its own supply line. However, if I have a cold water supply going to a vanity sink in a bathroom, can I supply the toilet with a simple t-brnach off of this cold water supply. Or does the toilet need to be on its own supply line?
         
        Posts: 2 | Registered: Jun 14, 2013Reply With QuoteReport This Post
        Picture of Frodo
        posted Hide Post
        it is code. and commen seince to have a seperite cut offs for each fixture. if ya gotta work on it, ya dont shut down every thing
        i personally like a cut off under the sink and toilet
        also. what size line are you running to your sink? 1 fixture per 1/2" line 2 fixtures is a 3/4 line
        thats so you can use both fixtures at the same time with no low flow condition


        https://www.youtube.com/*****?v=vn7bkncf1_E
         
        Posts: 3843 | Location: I live in southern mississippi | Registered: Jun 01, 2008Reply With QuoteReport This Post
        posted Hide Post
        The short answer is:yes you can
        The correct answer is: no you shouldn't, because you will defeat the purpose of the manifold system.

        Being able to isolate each fixture is key, and you won't have any T connections behind your drywall to leak. Also, toilets usually require more maintenance than lav's, and a separate shut off at the manifold will be appreciated when you need it.

        You can save $$ by running 3/8" line to toilets, lags, and ice makers. Use 1/2" to all showers, tubs, laundry, and hose bibs. (assuming you run dedicated lines to each) if you have multiple shower heads in the shower, use 3/4" line.

        If you haven't installed your manifold yet, use 1" suppy lines into the manifold.

        If you over size the supply lines to fixtures, it will take far longer for hot water to reach the faucet. A 1/2" line has twice the volume of 3/8" line. The fitting on the sink is 1/4", so you'll still have plenty of pressure and volume.

        Good luck!
         
        Posts: 372 | Registered: Sep 03, 2006Reply With QuoteReport This Post
        Picture of Frodo
        posted Hide Post
        wrong!!!!! 1/2" is minimum size piping as per code and a shut off valve SHALL be used at each fixture

        http://www2.iccsafe.org/states...0Piping%20System.pdf



        http://www.kingcounty.gov/heal...s/plumbing/wsfu.aspx


        http://www.phila.gov/li/PDF/Pl...tingApril%202012.pdf
        page 40, section p.810-3 valve locations

        This message has been edited. Last edited by: Frodo,


        https://www.youtube.com/*****?v=vn7bkncf1_E
         
        Posts: 3843 | Location: I live in southern mississippi | Registered: Jun 01, 2008Reply With QuoteReport This Post
        Picture of CommonwealthSparky
        posted Hide Post
        And when you think about it the savings would be minimal at best. Or may ever be more expensive as buying two sizes instead of all 1/2" fittins might mean buying single packs of PEX fittins instead of bulk packs. Sure you will always find a use for 1/2" on future projects.


        Popeye only reached for the Spinach can as a last resort...
         
        Posts: 1395 | Location: Central Pennsylvania | Registered: Jun 02, 2010Reply With QuoteReport This Post
          Powered by Social Strata  
         

            DIY Message Boards  Hop To Forum Categories  Home Improvement  Hop To Forums  Plumbing    PEX Cold Supply

        © Scripps Networks 2009

        Advertisement

        Posting Guidelines

        • Please be sure posts are category appropriate.
        • No off-topic or off-color postings.
        • Postings may be deleted at the discretion of DIY moderators.
        • No advertising is allowed.
        • Be nice. No name calling, personal attacks or flaming.
        • Certain words will trigger moderation of the post. These words mostly cover political or religious topics, which are OFF the topics covered by DIY.

        Full Guidelines

        For general message board help, click the tab labeled "Tools," and choose "Help" from the dropdown menu.